What is Diabetic Maculopathy? What Are Its Symptoms? How Is It Diagnosed and Treated?

Diabetic maculopathy is an eye complication that causes blurring and distortion in the center of your field of vision. If you have diabetes, this condition can directly affect your ability to read, recognize faces, and perform daily activities. Early diagnosis, in particular, plays a critical role in preventing vision loss. In this article, you will find answers to questions about what diabetic maculopathy is, what its symptoms are, and what treatment options are available. We will also examine the diagnostic methods and prevention strategies for the disease in detail.

What is Diabetic Maculopathy?

The damage caused by diabetes in the eye can concentrate in a specific area of the retina. This area is the macula, known as the yellow spot. Diabetic maculopathy is defined as edema (swelling) that accumulates in this specific area as a result of leaks from the blood vessels in the retinal layer.

The Role of the Macula in the Eye

The macula is a small area located at the back of your eye that is responsible for your sharp vision. It is the part that allows you to see colors and distinguish details. You use this area when reading a book, typing on your phone, or trying to understand the facial expression of the person in front of you.

When this area is damaged, central vision is directly affected. Your peripheral vision may remain normal, but you cannot see the exact point you are looking at clearly. Therefore, any problem in the macula significantly reduces your quality of daily life.

Relationship with Diabetic Retinopathy

Diabetic maculopathy is a specific type of diabetic retinopathy. While retinopathy affects the entire vascular system at the back of the eye, maculopathy specifically refers to changes in the yellow spot area. It can occur at any stage of both conditions.

The disease can lead to vision impairment even in the non-proliferative stage. Clinically significant macular edema, which develops as a result of leakage from blood vessels, is the most common cause of vision loss even in the early stages. Therefore, even if other symptoms of retinopathy have not yet developed, macular edema alone can cause serious vision problems.

It is examined in three groups: cystoid macular edema, exudative maculopathy, and ischemic maculopathy. In the cystoid type, microcystoid spaces form as a result of fluid accumulation within the retina. In the exudative type, hard exudate accumulation and macular thickening are observed. In the ischemic type, occlusion occurs in the capillaries.

The Development Process of the Disease

High blood sugar weakens the walls of the small blood vessels in the retina. Over time, these vessels become permeable, and the fluid, protein, and fat inside them leak into the retina. When the leakage accumulates in the macular region, edema occurs.

The risk of developing diabetic maculopathy is directly related to the duration of your disease. As the duration of diabetes increases, this risk rises. Specifically, findings of diabetic retinopathy are found in approximately 75% of patients who have had diabetes for over 15 years.

In individuals with poor blood sugar control, the damage progresses faster. Factors such as high blood pressure, kidney disease, and pregnancy can accelerate the process.

Symptoms of Diabetic Maculopathy

In the early stages, diabetic maculopathy does not cause any complaints. Even as the disease progresses, you may not notice vision loss unless the yellow spot is affected. However, once macular involvement begins, symptoms become apparent and directly affect your daily life.

Central Vision Disorders

If the center of vision is affected, the most important finding is a decrease in vision. The very center of the point you are looking at appears blurry. You can see your surroundings, but the area you are focusing on loses its clarity.

A decrease in central vision makes your daily activities difficult. You cannot distinguish the center of the screen while watching television. You have difficulty finding where the cursor is while working on a computer. Over time, this situation affects your work performance and independence.

As fluid leakage outside the vessels increases, so does blurred vision. The increase in macular edema further impairs your central vision. Blurred vision begins and gradually intensifies.

Difficulty Reading and Recognizing Faces

Among the symptoms of diabetic maculopathy, difficulty reading stands out. You have trouble sharpening letters while reading a newspaper or looking at your phone. The middle of words appears faint, and you cannot follow sentences.

Face recognition also becomes a serious problem. You have difficulty understanding who the person in front of you is. You cannot read facial expressions, and it becomes difficult to establish an emotional connection. You may feel uneasy in social settings.

Difficulty focusing restricts your daily life. You cannot read bills, distinguish labels while grocery shopping, or follow recipes in the kitchen. This loss of independence can be psychologically draining.

Changes in Color Perception

Colors appearing pale or faded is a characteristic symptom of diabetic maculopathy. You have difficulty distinguishing colors. Vibrant colors are perceived in shades of gray.

Colors lose their vibrancy and appear duller. You cannot distinguish the difference between red and orange. Blue tones appear like gray. This situation affects many areas from clothing choices to food preparation.

Visual Distortions and Blurring

Seeing straight lines as wavy or broken in places is a typical finding. Door frames appear crooked. The shapes of objects are perceived as distorted or warped.

The lines and shapes of objects you see every day seem to have changed. Floor tiles look wavy. Wall lines do not go straight. These visual distortions can create balance problems.

Blurred vision shows a decrease in both near and far distances. Blind spots and dark areas form in the field of vision. Black spots floating in front of your eyes appear.

Symptoms such as not being able to see clearly and not being able to distinguish distant objects emerge. You experience an unexplained drop in visual acuity. If you notice any of these symptoms, you should consult an ophthalmologist immediately.

Diagnostic Methods for Diabetic Maculopathy

The diagnosis of diabetic maculopathy is made through a detailed eye examination. Your ophthalmologist will perform multiple tests to determine the degree of damage to your macula and the need for treatment. These tests are painless and mostly non-invasive methods.

Fundus Examination

Your pupils are dilated with the help of drops. This process allows your doctor to examine the back of your eye from wider angles. The retina and macula are scanned in detail using special lenses.

If you have type 2 diabetes, a regular fundus examination should be performed from the moment of diagnosis. Since the disease usually starts insidiously, you may have a history of diabetes at the time of diagnosis. In type 1 diabetes, an examination can be performed at any time within the first 5 years after diagnosis.

In both types of diabetes, an eye examination should be repeated once a year even if you have no complaints. The first findings of diabetic retinopathy do not cause complaints; they give symptoms in the late stages. Therefore, the idea that not having a complaint does not require an examination is incorrect.

During the examination, your doctor looks for leaking blood vessels, thickening of the retina, pale fatty deposits, and damaged nerve fibers. At the same time, your intraocular pressure is measured. After the examination, your near vision will be blurry for a few hours.

Optical Coherence Tomography (OCT)

OCT obtains cross-sectional images of your retina using light waves. This method, which has no side effects, is extremely valuable in detecting macular edema. It is also known as eye tomography.

All layers of the retina are visualized and mapped, and their thicknesses are measured at the micron level. These measurements assist in the diagnosis of diabetic maculopathy and guide your doctor during the treatment process. The amount of macular edema and the patient's response to treatment are determined in this way.

Some retinal pathologies that cannot be detected by clinical examination or angiography can be identified with OCT. It is a very valuable diagnostic test, especially in cases where the macula is affected. The presence of cysts due to diabetic macular edema in the center is clearly visible.

Fluorescein Angiography

A special dye called fluorescein is injected from a vein in your arm. This dye reaches the blood vessels in your retina in a short time. The arm-to-retina time is on average 10-15 seconds.

As the dye passes through the vessels, photos are taken with a special camera. During the procedure, black and white photos of the retina are obtained with a fundus camera. Your doctor determines which vessels are leaking and to what extent, and shapes the treatment recommendation accordingly.

In diabetic maculopathy, whether there is bleeding or leakage from the vessels is easily distinguished with this method. Angiography also helps decide what kind of treatment will be performed in which region of the retina. After the procedure, your skin color will turn yellowish and your urine color will darken for about 2 days.

Visual Acuity Tests

The visual acuity test measures how well your eye can see letters, shapes, or numbers at a certain distance. Your level of vision is evaluated at different distances. This test shows how much the disease affects your vision and is used to monitor treatment success.

Treatment of Diabetic Maculopathy

Diabetic maculopathy treatment aims to reduce fluid in the center of the retina and protect your vision. Regulation of blood sugar, blood pressure, and cholesterol is the fundamental element in the success of the treatment. Different approaches are used depending on the stage of the disease.

Anti-VEGF Drug Injections

One of the most effective treatment methods for diabetic macular edema is anti-VEGF injections. These drugs suppress the VEGF substance that increases vascular permeability. As a result, vascular leakage decreases, edema recedes, and vision clears.

The procedure is performed under sterile conditions with topical anesthesia. Most patients feel only slight pressure. The application takes a few minutes and is generally painless. In the first months, an injection is usually given once a month. As vision and OCT findings improve, the intervals are extended.

Success rates are higher in combined treatments. In high-risk patients, when anti-VEGF and laser treatment were applied together, edema decreased in 93% of the combination group at the 12th month. In the group where only laser was applied, this rate was recorded as 71%.

Laser Treatment

Laser treatment reduces edema by closing leakage points or prevents the formation of new blood vessels. Today, it is mostly used to support injections. It can be applied as a standard treatment in early edema that does not have central involvement or does not reduce visual acuity.

A contact lens is placed on the eye, and the laser light is delivered to the areas to be treated through this lens. The procedure generally does not cause discomfort, but in some cases, mild pain may be felt. It is possible to prevent blindness in 85-90% of patients treated with laser in the early stage.

Corticosteroid Injections

In some patients, intraocular steroid implants are preferred. These drugs provide effect for months by releasing slowly inside the eye. In cases of diabetic macular edema where an adequate response to anti-VEGF treatment cannot be obtained, injections containing cortisone may be switched to.

Corticosteroids show a beneficial effect by reducing the amount of inflammatory substances produced by cells. They are also used to reduce the risk of edema. However, they may have side effects such as increased intraocular pressure and cataract development.

Vitrectomy Surgery

Vitrectomy surgery is performed when bleeding occurs inside the eye or when laser treatment is not possible. Bleeding inside the eye and bands causing traction are cleaned. It is aimed for the retina to regain its old anatomical structure.

The surgery is performed under local or general anesthesia. The procedure is carried out by entering the eye through small holes opened in the eye wall. At the end of the surgery, silicone or gas may be placed inside the eye. If silicone oil is placed, it is removed with a second surgery after a few months.

Expectations During the Treatment Process

The choice of treatment is made according to the results of the examination and tests. The person's general health status, previous eye surgeries, and previous treatments are also effective. Each patient's response to treatment is different, so a personalized protocol is applied.

Timely treatments significantly reduce the risk of blindness. Patient compliance and regular follow-up are essential for success.

Risk Factors and Prevention Methods

Reducing the risk of developing diabetic maculopathy is entirely in your hands. Long-term diabetes, poor blood sugar control, high blood pressure, high cholesterol, pregnancy, and kidney disease are the main risk factors. Managing these factors is the most effective way to prevent vision loss.

Blood Sugar Control

Keeping your blood sugar level in the target range significantly reduces the risk of diabetic maculopathy. Your HbA1c level should be below 7%. To reach this target, perform regular blood sugar monitoring, comply with your medication use, and follow an appropriate diet.

Glycemic control is the most important among systemic risk factors. Success in blood sugar control can prevent both the development and progression of maculopathy. Poorly managed diabetes directly threatens your eye health.

Importance of Regular Eye Examinations

Diabetic maculopathy does not give symptoms in the early stage. Therefore, regular eye examination is vital to prevent vision loss. If you have type 2 diabetes, you should have a comprehensive eye examination as soon as you are diagnosed. In type 1 diabetes, you can have an examination at any time within the first 5 years.

In both groups, an eye examination should be repeated once a year. In patients diagnosed with diabetic retinopathy, regular control is required at 3-4 month intervals. It is possible to prevent vision loss with early diagnosis and timely treatment.

Blood Pressure and Cholesterol Management

Hypertension is an important trigger for diabetic maculopathy. Your blood pressure should be kept at ideal levels. The target is usually below 140/80 mmHg. If you have additional complications, this target drops below 130/80 mmHg.

High cholesterol levels negatively affect retinal vessels. Cholesterol control should be achieved with diet adjustments, exercise, and medication use when necessary. Normal blood lipid levels can specifically reduce the development of macular edema.

Healthy Lifestyle Habits

A balanced diet, regular physical activity, and avoiding smoking improve your general vascular health and lower the risk. Increased physical activity helps achieve blood sugar control. Smoking increases the risk of death from heart disease by at least 4 times.

As a conscious patient, you can manage risk factors more effectively. Get information about the importance of blood sugar, blood pressure, and cholesterol control and participate actively in the process.

Frequently Asked Questions

When should an eye examination be done if you have diabetes?

When you have type 2 diabetes, the first eye examination should be done as soon as you are diagnosed. Since the disease starts insidiously, eye complications, including diabetic maculopathy, may have developed at the time of diagnosis. Findings of diabetic retinopathy are detected in 20% of newly diagnosed type 2 diabetic patients.

If you have type 1 diabetes and are over 10 years old, you can have an examination within the first 5 years after diagnosis. In both groups, a fundus examination should be repeated once a year even if you have no complaints.

Why does diabetic maculopathy develop in some diabetic patients?

The development of the disease depends on blood sugar control, duration of diabetes, blood pressure, and cholesterol levels. Genetic predisposition also affects the risk, so not everyone is affected to the same extent. If your blood sugar is irregular, your blood pressure is high, or cholesterol control cannot be achieved, the risk increases.

Does pregnancy accelerate the progression of diabetic maculopathy?

Yes, pregnancy hormones can affect the vascular structure and accelerate the disease. Eye follow-up in pregnant women with diabetes should be done regularly at the beginning of trimesters. During pregnancy, examination intervals are shortened, and more frequent control is required.

How long does diabetic maculopathy treatment take?

The duration of treatment varies according to the stage of the disease and the method used. Laser treatment can take several sessions. Intraocular injections are applied at monthly intervals and over a long period. In advanced cases, vitrectomy surgery takes 1-2 hours, but the recovery process takes weeks.

Which doctor should you consult?

Consult the Ophthalmology department for the diagnosis and treatment of diabetic maculopathy. Ophthalmologists specializing in retinal diseases and vitreoretinal surgery follow and treat this disease. It is important to choose an ophthalmologist who works in coordination with your endocrinologist.

Can vision be fully restored?

In patients treated in the early stage, the level of vision can be largely preserved. However, in cases where it is too late, the loss may be permanent. That is why early diagnosis is very important. Instead of expecting vision to return completely to normal with treatment, it is a realistic goal to preserve the current level of vision and prevent further loss.

Should my blood sugar be normal for an eye exam?

Yes, your blood sugar should be under control for at least five to ten days. Glasses given while blood sugar is high may not be suitable when it returns to normal. Rapid changes in blood sugar can cause fluctuations in vision.

In Summary, Diabetic Maculopathy

Diabetic maculopathy can lead to vision loss, but it is a preventable condition with early diagnosis. When you have regular eye examinations, your chance of catching the disease before it gives symptoms increases. Keep your blood sugar under control, monitor your blood pressure, and pay attention to healthy lifestyle habits.

Especially if you have a diabetes diagnosis, do not neglect your eye health. Treatment options are quite advanced today, and you can protect your vision with timely intervention. Stay in regular communication with your ophthalmologist and comply with the recommended control intervals. Your health is in your hands.

Diabetic maculopathy can lead to vision loss. Get detailed information about its symptoms, diagnostic methods, and treatment options. Protect your vision with early diagnosis.